collins



p @uiten tetrs atmt @ffice IMPROVEMENT IN IORMINGl GLASS CEIMNBYS FOR LAMPS.

@he rlgehnle meme te ilt tiges: ieticts @anni imo making and nf the sami.

TO ALLIERSONS TO WHOM THESE PRESENTS MAY COME:

Be it known that I, M. II. COLLINS, of Chelsea, in the county of Suffolk, and Stn-te of Massachusetts, have made a new and useful invention or implement to be employed in making Glass Chimnoysfor Lamps, such implement being also useful in the manufacture of various other articles of glass; and I .lo hereby declare the said invention to be fully described in the following specification, and represented in the accompanying drawings, vof which 'Figure 1 is a. side elevation. Figure 2 an end view, and Eigure 3 a longitudinal section of it. y The particular purpose of it is to enable a glass-blower, without the aid of a mould, to make any number of glass lamp-chimneys, each of which shall be cylindrical at and above its base, and there be of one uniform size in diameter, a. chimney of sueli character being represented in longitudinal section in Figure 4 of the drawings.

In carrying out my invention I aix concentrically upon mdat right angles with a metallic rod, A, a thin head or disk, B. The said disk I arrange at a sufficient distance from one end of the rod, and I also attach to i the disk `a. skeleton frame or .series of wires, C C C C, arranged parallel to the rod, each wire boing fixed at one end of it to the disk, and atits other end to the rod, tho wire being bent, as shown at d, in order to enable it to he fixed to the end of the lrod, or a head, a, formed thereon. The said wires are to be disposed at equal distances apart, and 'fastened to the disk at a short distance from it speriphery, that is, as shown at b b. A pointed blade or piercer, D', is to screw into and project from that end 'of the rod to which the wires are fastened. Furthermore, to the other end of the rod A, I lix two-springs, D, sothat they mayrmbrace the red on its opposite sides in manner as shown in iig. 1. To the end of each spring I ailix a header metallic bar, E, from which I project two prongs Jr-wires, 1F, F-,sothat they-may stand-with refenence to thehviros C C in manner as represented in the drawings. In order to prevent'tbe springs from spreading too far apart, wires, G G, are extended from the red A throughholes in the springs, and are provided with stops,'c c, for the springs to bring up against.

The above constitutes theapparatns er implement as invented by ine for the purpose hcrcinbcfore specified. In using it, a. workman, after having blown and formed to a propershape a mass ofglass en the end of a tube,

i is to employ the piercer D to stab and open the end of tho massl while the mass may be in the act of being revolved. This having been done, he is toycrowd the series of wires C C C C into the Opening, still keeping the mass of glass in revolution. The wires will cause the interior of thc mass to be Cylindrical. When it may be desirable to form the cylindrical part of the mass with-a lip or tlnngeprojecting from itS'open end, this may bo done by forcing the part b of the disk D, against tho-end of the mass, the said end part being spread a little by the workman. The disk may be curved a little, so as to aid in turning the lip outward. By compressing the springs D D so as to bring the prongs F Fin contact with the glass while it may bc in revolution, it will be forced toward and kept inl oontact'with the wires C C C C, and by the combined action of the prongs and wires the glass 'will be made cylindrical both externally and internally. -It may afterward, be tapered down atvits otherend by a process well known to glass-blowers, the cliimney, wl1en finished, having the form shown inl section in 6g. 4. Every chimney made by means of the implement will be cylndricnhor of the same diameter or size at bottom. Were a solid Cylinder usedvin the place of the wires C the glass would be chilled and cracked iu many places.

I`cluim the combination and arrangement of the skeleton trame or series of WileS C, with the rod A, or such rod and the disk B, such being for use in manner as set forth.

I also claim the combination and arrangement of the piercer D( with the rod A and Skeleton frame or wires C, (or suchnnd the disk B.)

I also claim the combination and arrangement of one or more springs D and prongs F with tbe rod A and the skeletonl frame or series of wires C.

I also claim the combination of the piercer D', the rod A, and one or more springs D and prongs F,

I also claim the combination of the prongs F with each of the springs D, the whole being arranged substantiall as s eci d. y p e M. H. COLLINS.

Witnesses:

R. H. EDDY, F. l. HALE, Jr. 

